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Gyalecta jenensis (Batsch) Zahlbr.
Family: Gyalectaceae
Gyalecta jenensis image
Stephen Sharnoff  
Thallus: crustose, thin or rather thick and then uneven, sometimes cracked or effuse, inconspicuous, often endolithic surface: gray-pink or orange-pink, to pale gray-green or pale yellow, fading in the herbarium Apothecia: usually numerous, sessile, scattered to often heaped or occasionally confluent, round, 0.3-1.2 mm in diam. disc: pale to deep orange or orange-red, at first pore-like, then concave, often shiny margin: entire or with radiate cracks exciple: pale pink or externally pale to brownish yellow and internally hyaline, well developed, smooth, even to +coarsely radiate-striate, crenate, often radiately prolific in the older ones hymenium: hyaline to yellow below, with oil droplets, I+ permanently blue (or I-, according to Thomson, 1997), 110-150 µm tall; paraphyses: 1.5-2 µm wide below, with tips up to 3 µm wide; hypothecium: hyaline asci: cylindrical, (4-)8-spored, with uniseriate or partly biseriate spores, 8-spored ascospores: hyaline, 3septate to muriform when mature, with 3-6 transverse septa and 1-2 longitudinal septa, ellipsoid to narrowly ellipsoid,. (11-)15-25(-40) x 6-10(-16) µm Spot tests: thallus K-, C-, KC-, P- Secondary metabolites: none detected. Substrate and ecology: usually on damp, often sheltered and shaded, calcareous rock or mortar, sometimes spreading to adjacent soil and mosses World distribution: circumboreal-temperate, Northern Hemisphere; Europe, North Africa; North America (mostly eastern, but also reported from British Columbia and California) Sonoran distribution: southern California. Notes: The immature apothecia of Gyalecta jenensis are +spherical prior to the development of the disc and then resemble pale pink perithecia. The thallus is sometimes associated with bright orange tufts of the photobiont (Trentepohlia).
Gyalecta jenensis image
Samuel Brinker  
Gyalecta jenensis image
Samuel Brinker  
Gyalecta jenensis image
Gyalecta jenensis image
Gyalecta jenensis image
Gyalecta jenensis image
Gyalecta jenensis image
Gyalecta jenensis image
Gyalecta jenensis image
Gyalecta jenensis image
Gyalecta jenensis image
Gyalecta jenensis image